How to specify random effects in mixed model using lmer ?

Mixed model with lme4 , which model to choose consider our experiment ? A clinical trial was carried out to assess effect of a drug X on serum progesterone in cattle. A total of 24 animals were...

07 August 2018 4,087 0 View

Mixed model with lme4 , which model to choose consider our experiment ?

A clinical trial was carried out to assess effect of a drug X on serum progesterone in cattle. A total of 24 animals were divided into three equal groups . The animals in first group served as...

07 August 2018 6,872 0 View

Are you familiar with the interpretation of time series analysis in R?

03 April 2015 5,588 2 View

What is the best method to carry out repeated measures MANOVA?

Testicular volume & scrotal circumference of twelve bulls were measured repeatedly. The bulls were divided into two categories (young versus old). We are interested in investigating the effect...

08 September 2014 9,895 3 View

How does one save raster as geotiff and later on convert it into grid format?

How does one save raster as geotiff and later on convert it into grid format?

07 August 2014 4,800 8 View

Can anyone answer some questions regarding the recording of categories for binary logistic regression analysis?

1) Is allowed to delete outliers from dependent numeric variables for binary logistic regression analysis.2) I have a nominal variable with five categories (with codes 2, 6, 10, 13, 14). Category...

07 August 2014 3,995 7 View

How can I calculate the mean of Zonal statistics in QGIS?

06 July 2014 9,464 7 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

How to code open-ended questions in SPSS?

Hello all, In SPSS I am going to code 2 open-ended questions. I have already read all the answers and I made a list of the most important categories to which I can code the answers. This question...

02 March 2021 1,757 4 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

Energy minimization in LAMMPS using NVT ?

How do I do energy minimization in lammps with NVT ensemble ? I am using the following command and it does not seem to work. It stops at extremely high energy and gives me the error zero search...

01 March 2021 2,294 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

Mediation path analysis - Can I run two seperate models?

I am wanting to run a serial mediation model with 2 x IVs, 2 x MVs, and 3 DPs (all continuous). Is it problematic to run 2 different models for each IV, keeping the MVs and DPs the same in each...

27 February 2021 5,681 3 View

Mixed ANOVA - help?

I'm currently working on a piece which asks to conduct an ANOVA - looking at the effect of sporting group (2 levels), and exercise trials (two trials with six levels). I've computed this all...

27 February 2021 9,626 4 View

Modeling viscosity using model of Chung?

Hello, As part of simulation of gases mixture and water, I need to calculate viscosity of the fluid components and I am using relationships proposed by Chung et al. (1988). The irony is while I...

25 February 2021 8,053 5 View